[BurningRubber92]

After driving on the highway I am getting a yellow break light and 4x4 light. If I turn off the car and remove the key the lights will go away when I start it up next. Had the dealer look at it and said I needed a new transfer case ($4000). I have ISTA and am reading the following codes.

0055C3 - VTG: AWD limp-home control activated. No DSC specified nominal torque
0054C8 - VTG: Classification resistor
005EC0 - DSC: steering angle sensor adjustment

Originally thought it was the transfer case servo motor so I replaced it and reset the adaption in ISTA. Still getting the same errors. Going to change the transfer case fluid to see if that does anything, but it did not look bad when replacing the servo motor.

ISTA is saying there is a communication problem with the VTG control unit.

The 4 wheel drive works after startup until the codes come on and they only pop up when driving on the highway. Around town it works fine, after driving about 5 miles on the highway the codes come up. So im not sure if it would be the Transfer Case itself or maybe the control unit?

As far as I can tell the only thing happening is im loosing AWD drive and only using RWD, but this also disables my cruise control which is annoying. Any input would be helpful, im hoping to get the AWD working for the winter, but don't want to spend $2k on a transfer case.